Ceramist Search

CLOSE


Ceramist 2007;10(3):55-66.
Published online June 30, 2007.
Infrared Scanning Near-Field Optical Microscopy (IR-SNOM) Below the Diffraction Limit
J.S. Sanghera, I.D. Aggarwal, A. Cricenti, R. Generossi, M. Luce, P. Perfetti, G. Margoritondo, N. Tolk, D. Piston
Naval Research Laboratory
Abstract
Infrared Scanning Near-field Optical Microscopy (IR-SNOM) is an extremely powerful analytical instrument since it combines IR spectroscopy's high chemical specificity with SNOM's high spatial resolution. In order to do this in the infrared, specialty chalcogenide glass fibers were fabricated and their ends tapered to generate SNOM probes. The fiber tips were installed in a modified near field microscope and both inorganic and biological samples illuminated with the tunable output from a free-electron laser located at Vanderbilt University. Both topographical and IR spectral images were simultaneously recorded with a resolution of ${sim}50;nm$ and ${sim}100;nm$, respectively. Unique spectroscopic features were identified in all samples, with spectral images exhibiting resolutions of up to ${lambda}/60$, or at least 30 times better than the diffraction limited lens-based microscopes. We believe that IR-SNOM can provide a very powerful insight into some of the most important bio-medical research topics.
TOOLS
Share :
Facebook Twitter Linked In Google+ Line it
METRICS Graph View
  • 631 View
  • 4 Download
Related articles in Ceramist


ABOUT
BROWSE ARTICLES
EDITORIAL POLICY
AUTHOR INFORMATION
Editorial Office
Meorijae Bldg., Suite # 403, 76, Bangbae-ro, Seocho-gu, Seoul 06704, Korea
Tel: +82-2-584-0185    Fax: +82-2-586-4582    E-mail: ceramic@kcers.or.kr                

Copyright © 2024 by The Korean Ceramic Society.

Developed in M2PI

Close layer
prev next